| Lean-to 1. (a.) Having only one slope or pitch; -- said of a roof. 2. (n.) A shed or slight building placed against the wall of a larger structure and having a single-pitched roof; -- called also penthouse, and to-fall. Thesaurus Entries Nissen hut, Quonset hut, box, cavity, cell, cellule, chamber, compartment, crib, crypt, cubicle, enclosed space, gatehouse, hold, hole, hollow, hut, hutch, kiosk, lean-to, manger, news kiosk, newsstand, outbuilding, outhouse, pavilion, pew, sentry box, shack, shanty, shed, stall, stand, tollbooth, tollhouse, vault |